
DC+AC Combiner Box 1000 V with Type 1+2 SPD, 2 Strings on 1 MPPT, 16 A Three-Phase
Combined DC+AC combiner box for photovoltaic systems with a three-phase inverter, designed for buildings equipped with a lightning protection system (LPS). It gathers 2 photovoltaic strings connected in parallel to a single MPPT input of the inverter.
The distinctive feature is the presence of Type 1+2 surge protective devices on both sides: the one on direct current, for 1000 V DC, and the one on alternating current. Combined Type 1+2 SPDs are able to discharge direct lightning current as well as induced overvoltages, and are therefore required where an LPS exists or the lines are particularly exposed. The box is completed by a 16 A three-phase miniature circuit breaker that protects and isolates the AC line running to the distribution board.
Key features
Technical specifications
| Feature | Value |
|---|---|
| Switchboard type | Combined DC+AC combiner box for photovoltaic systems |
| System side | Direct current and alternating current |
| Number of PV strings | 2 |
| MPPTs managed | 1 |
| Maximum PV voltage | 1000 V DC |
| DC surge protective device (SPD) | Type 1+2, 1000 V DC |
| AC surge protective device (SPD) | Type 1+2 |
| Miniature circuit breaker (MCB) | 16 A, three-phase (3 poles) |
| Number of poles / phases | Three-phase AC side |
| Residual current device (RCD) | Not present: to be provided upstream in the distribution board |
| Dimensions (W × H × D) | 319 × 259 × 144 mm |
| Weight | 3.1 kg |
| Reference standards of the components | EN 61643-11 (AC SPDs), EN 61643-31 (PV SPDs), IEC/EN 60898-1 (MCB) |
Installation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.